KROHNE VA 40-VA 45 EN - Manual (Page 15)

ELECTRICAL CONNECTIONS
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VA40 - VA45
www.krohne.com 09/2013 - 4000424402 MA VA40 45 R04 en
Electrical connections
4.1 Safety instructions
4.2 VA40 limit switches
The flowmeter VA40 can be equipped with a maximum of two limit switches:
Type bistable (stable changeover from NC to NO contact and vice versa)
Type monostable (switching pulse at operating point)
Operation and Technical data of the limit switches see Technical data.
DANGER!
All work on the electrical connections may only be carried out with the power disconnected. Take
note of the voltage data on the nameplate!
DANGER!
Observe the national regulations for electrical installations!
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
Figure 4-1: Types of limit switches
1 Ring type limit switch
2 MS 14/I - potential-free Reed contact
3 TG21 - with integrated slot sensor
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